Grain-car door.



E. W. HOGAN.

GRAIN CAR DOOR.

APPUCATION HLED MAY 25. I914.

1 1 53387 Patented Sept. 14, 1915.

WITNESESES. INVENTOR.

COLUMBIA PLANOGRAPH COWWA5HINGTON, u. c.

ENOS W. HOGAN, OF BANNING, ONTARIO, CANADA.

GRAIN-CAR DOOR.

I Specification of Letters Patent.

Patented Sept. 14:, 1915.

Application'filed' May 25, 1914. Serial No. 840,906.

To all whom it may concern:

Be it known that I, ENos W. HOGAN, of Banning, in the district of Thunder Bay, Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Grain-Car Doors, of which the following is a specification.

This invention relates to doors intended to be applied to the doorways of box cars when the latter are used for grain, and my object is to devise a door for this purpose which will be cheap, simple, easily removable and convenient to operate.

I attain my object by providing a door adapted to slide vertically in guides formed by stop pieces, the outer stops being vertically slidable so that one or both may be raised to release the door. The inner stops only extend partway up so that the door may be swung inwardly when raised to the top of the doorway. Preferably also the door is divided horizontally so that the lower part may be allowed to swing outwardly by partly raising the movable stops.

The invention is illustrated in the accompanying drawings in which Figure l is a front elevation of part of the car provided with my improved grain door, the door being closed; Fig. 2 a rear view showing the door opened; Fig. 3 a vertical section showing the lower part of the door swung outwardly; and Fig. 4 a horizontal cross section.

In the drawings like numerals of reference indicate corresponding parts in the different figures of the drawings.

1 represents part of a car, 2 being the doorway. At opposite sides of the doorway vertical guideways are formed in which the door 3 may slide. These guideways are formed by vertical stop pieces between which the door slides. The inner stop pieces 4 are fixed and extend only partway up the door opening. The outer stops 5 are slidable being of dovetail form as shown in Fig. 4 and fit in suitable dovetailed grooves formed in the sides of the doorway. These outer stops 5 are of such a height that when raised to the top of the doorway the door 3 is left free to move outwardly. When the door is in use it occupies the position shown in Fig. 1 being held in place by the stops 4 and 5. If one of the stops be slid up to a position above the door, the door may swing out hinging as it were on the opposite side and is thus readily removable to let out the grain contained within the car.

If the mode of operation is as described it is evident it will only be essential to have one of the stops 5 vertically movable. I prefer, however, to make them both vertically movable and to form the door in two parts, the division being on a horizontal line, and the parts connected by the hinges 6. With a door so constructed the method of opening the door to release the grain is to vertically move both the outer stops 5 to a height sufficient to clear the lower part of the door, the latter is then free to swing outwardly to relieve the pressure of the grain behind it. Subsequently one or both of the outer stops 5 may be raised to the top of the doorway and the door completely removed. As there is considerable pressure against the stops 5 when the car is loaded, I deem it preferable to provide gearing to raise the stops 5. I therefore form on the back of each of the stops 5 a rack 7, with which rack meshes a pinion 8 fastened on a spindle 9 journaled in the frame of the car. Each spindle is provided with a suitable handwheel 10 or other means whereby it may be conveniently rotated. By the aid of this gearing the stops may be easily raised no matter what the pressure behind them. As hereinbefore stated the stops 4 extend only partway up the doorway, hence when the car is not in use for the transhipment of grain, the stops 5 may be left in their down position, and the door slid up to the top of the doorway as shown in Fig. 2, it may then be readily swung inwardly and hung to the roof of the car. It is common, however, to provide means for swinging a grain door and supporting it in this manner and unnecessary therefore in the present application to indicate means for this purpose.

From the above description it will be seen that I have devised a grain car door which will attain the objects of my invention as set out in the preamble to this specification.

What I claim as my invention is:

1. A car having a doorway formed therein in combination with vertical stops forming guide ways at each side of the doorway, and a door slidable vertically in said guide ways,

the door being divided horizontally into tWo parts and both of the onter stops being vertically movable, one to rise above the top J of the door and the other at least above the bottom partof the door. H V Port Arthur this nineteenth day of May,

' A. D. 1914. V

i j ENOS HOGAN.

Signed in the presence of L. E. HOGAN, W. MGBRADY.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents i 7 Washington, D. O." I 

